Loose leaf binder



Patented Jan. 19, 1932 UNITED STATES PATENT OFFICE FRANCIS LEVITT IMPEY, OF NORTHFIELD, BIRMINGHAM, ENGLAND, ASSIGNOR TO MOR- LAN D & IMPEY, LIIWITED, OF BIRMINGHAIVI, ENGLAND LOOSE LEAF BINDER Application filed November 11, 1930, Serial No.

:} get-her temporarily in a simple and expeditious manner. The invention is intended particularly for use with that type of leaf assembly in which the separate leaves are held in a stepped relationship by posts passing through perforations in the leaves and attached to separating or supporting sheets.

In the accompanying sheet of explanatory drawin gs Figure 1 is a plan with part in section and having parts broken away, Figure 2 an end view and Figure 3 a rear view of a binder constructed in accordance with this invention.

In carrymg the invention into effect as shown, a number of loose leaves a are arranged in stepped formation in a plurality of groups with a cardboard or like separating sheet 6 between each two groups. Each separating sheet is provided on each side of its inner edge with hollow metal or like retaining posts 0 which are adapted to pass through holes in the inner edges of the loose leaves and to engage the interiors of the hollow posts on adjacent separating sheets. Any convenient number of such separating sheets with loose leaves attached thereto may thus be nested together, and located between a pair of preferably flexible protecting covers (Z made of leather, fabric or the like and likewise provided at their inner edges with holes, through which the ends of the retaining posts can project.

The assembled loose leaves, separating sheets and protecting covers are bound to gether by pair of clamping bars 9, one each of which is provided with an appropriate number of holes f engaged by the ends of the retaining posts on the separating sheets, and with two or more posts 9 projecting through holes in the covers, loose leaves a d separating sheets and engaging corresponding holes h in the other clamping bar. lhe bars are made of wood or other convenient material and their ends extend beyond the top and bottom edges of the assembled leaves 494,938, and in. Great Britain March 31, 1930.

and are each provided with anecl: or groove 2', the bars are detachably secured together by rubber or like flexible rings or hands engaging the necks or grooves in the adjacent ends of the bars.

It will be seen that the clamping bars can thus be. rapidly detached from each other for the insertion or withdrawal of loose leaves by removing the rings or bands from the ends of the bars, and that a number of loose leaves can be temporarily bound together between the clamping bars in a very simple and expeditious manner.

The invention is not limited to the example above described. Instead of flexible covers as above described stiff covers may be employed; or one cover, preferably the back cover, may be stiff, and the other (the front) cover flexible, whereby the front cover can be turned aside and written entries made on the leaves, the stiff back cover thus forming a rigid base to facilitate writing. Further, instead of separate covers, each or either cover may be permanently attached to the adjacent clamping bar.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is 2- 1. In loose leaf books, the combination of a plurality of leaf-separating sheets, hollow, tapered, open bottomed, interengageable posts on the separating sheets adapted to pass through holes in the leaves a pair of clamping bars having openings therein adapted to accommodate the projecting ends of the said posts and each having holes therein, posts secured to each clamping bar adapted to pass through the leaves and separating sheets into engagement with the holes in the other bar, and resilient means securing the ends of the clamping bars, substantially as described.

2. In loose leaf books, the combination of a plurality of leaf-separating sheets, hollow, tapered, open-bottomed, interengageable posts on the separating sheets adapted to pass through holes in the leaves, a pair of covers, a pair of clamping bars having openings therein adapted to accommodate the projecting ends of the said posts and each having holes therein, posts secured to each clamping bar adapted to pass through the leaves and separating sheets into engagement with the holes in the other bar, and rubber rings securing the ends of the clamping bars, substantially as described.

In testimony whereof I have signed my name to this specification.

FRANCIS LEVITT IMPEY. 

